19481488

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{409}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 40926200

約数和(自身を除く): 21444712

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 229, 409, 458, 818, 916, 1636, 1832, 2977, 3272, 3664, 5317, 5954, 6544, 10634, 11908, 21268, 23816, 42536, 47632, 85072, 93661, 187322, 374644, 749288, 1217593, 1498576, 2435186, 4870372, 9740744, 19481488]

約数ペア:

[(1, 19481488), (2, 9740744), (4, 4870372), (8, 2435186), (13, 1498576), (16, 1217593), (26, 749288), (52, 374644), (104, 187322), (208, 93661), (229, 85072), (409, 47632), (458, 42536), (818, 23816), (916, 21268), (1636, 11908), (1832, 10634), (2977, 6544), (3272, 5954), (3664, 5317)]